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/* -*- linux-c -*- */
/*
* $Id: at76c503-i3863.c,v 1.3.2.4 2003/09/04 05:27:19 jal2 Exp $
*
* Driver for at76c503-based devices based on the Atmel "Fast-Vnet" reference
* design using a Intersil 3863 radio chip
*
* Copyright (c) 2002 - 2003 Oliver Kurth <oku@masqmail.cx>
* Changes Copyright (c) 2003 Joerg Albert <joerg.albert@gmx.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
*
* This driver is derived from usb-skeleton.c
*
* This driver contains code specific to Atmel AT76C503 (USB wireless 802.11)
* devices which use the Intersil 3863 radio chip. Almost
* all of the actual driver is handled by the generic at76c503.c module, this
* file just registers for the USB ids and passes the correct firmware to
* at76c503.
*
* History:
*
* 2003_02_11 0.1: (alex)
* - split board-specific code off from at76c503.c
* - reverted to 0.90.2 firmware because 0.100.x is broken for WUSB11
*
* 2003_02_18 0.2: (alex)
* - Reduced duplicated code and moved as much as possible into at76c503.c
* - Changed default netdev name to "wlan%d"
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/init.h>
#include <linux/firmware.h>
#include "at76c503.h"
/* Include firmware data definition: a dummy or a statically compiled-in fw */
#ifdef CONFIG_AT76C503_FIRMWARE_DOWNLOAD
# include "fw-empty.h"
#else
# include "fw-pkg-i3863.h"
#endif
/* Version Information */
#define DRIVER_NAME "at76c503-i3863"
#define DRIVER_AUTHOR \
"Oliver Kurth <oku@masqmail.cx>, Joerg Albert <joerg.albert@gmx.de>, Alex <alex@foogod.com>"
#define DRIVER_DESC "Atmel at76c503 (i3863) Wireless LAN Driver"
/* firmware name to load if above include file contains empty fw only */
#define FW_NAME DRIVER_NAME "-fw"
#define VENDOR_ID_ATMEL 0x03eb
#define PRODUCT_ID_ATMEL_503_I3863 0x7604 /* Generic AT76C503/3863 device */
#define VENDOR_ID_SAMSUNG 0x055d
#define PRODUCT_ID_SAMSUNG_SWL2100U 0xa000 /* Samsung SWL-2100U */
static struct usb_device_id dev_table[] = {
{ USB_DEVICE(VENDOR_ID_ATMEL, PRODUCT_ID_ATMEL_503_I3863 ) },
{ USB_DEVICE(VENDOR_ID_SAMSUNG, PRODUCT_ID_SAMSUNG_SWL2100U) },
{ }
};
/*---------------------------------------------------------------------------*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)
extern inline char *fw_dev_param(struct usb_device *udev, char *buf)
{
snprintf(buf, FIRMWARE_NAME_MAX, "usb-%s-%s",
udev->bus->bus_name, udev->devpath);
return buf;
}
#else
#define fw_dev_param(udev, buf) (&udev->dev)
#endif
MODULE_DEVICE_TABLE (usb, dev_table);
/* this is the firmware we use */
const struct firmware *fw;
/* Module paramaters */
static char netdev_name[IFNAMSIZ+1] = "wlan%d";
MODULE_PARM(netdev_name, "c" __MODULE_STRING(IFNAMSIZ));
MODULE_PARM_DESC(netdev_name,
"network device name (default is wlan%d)");
static int debug = 1;
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug,
"debug output (default: 1)");
/* Use our own dbg macro */
#undef dbg
#define dbg(format, arg...) \
do { \
if (debug) \
printk(KERN_DEBUG __FILE__ ": " format "\n" , ## arg);\
} while (0)
/* local function prototypes */
static int at76c50x_probe(struct usb_interface *interface,
const struct usb_device_id *id);
static void at76c50x_disconnect(struct usb_interface *interface);
/* structure for registering this driver with the usb subsystem */
static struct usb_driver module_usb = {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)
owner: THIS_MODULE,
#endif
name: DRIVER_NAME,
probe: at76c50x_probe,
disconnect: at76c50x_disconnect,
id_table: dev_table,
};
/* Module and USB entry points */
static int at76c50x_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *udev __attribute__ ((unused));
udev = interface_to_usbdev(interface);
/* if fw is statically compiled in, we use it */
if (static_fw.size > 0) {
dbg("using compiled-in firmware");
fw = &static_fw;
} else {
#ifdef CONFIG_AT76C503_FIRMWARE_DOWNLOAD
char buf[FIRMWARE_NAME_MAX] __attribute__ ((unused));
if (fw == NULL) {
dbg("downloading firmware " FW_NAME);
if (request_firmware(&fw, FW_NAME,
fw_dev_param(udev,buf)) == 0) {
dbg("got it.");
} else {
err("firmware " FW_NAME " not found.");
return -EFAULT;
}
} else
dbg("re-using previously loaded fw");
#else
err("either configure driver for firmware loader or compile"
"firmware in");
return -EFAULT;
#endif
}
return at76c503_do_probe(interface, &module_usb, fw->data, fw->size,
BOARDTYPE_INTERSIL, netdev_name);
}
static void at76c50x_disconnect(struct usb_interface *interface)
{
struct at76c503 *dev;
dbg("%s: ENTER", __FUNCTION__);
dev = usb_get_intfdata (interface);
usb_set_intfdata(interface, NULL);
info("%s disconnected", dev->netdev->name);
at76c503_delete_device(dev);
dbg("%s: EXIT", __FUNCTION__);
}
static int __init mod_init(void)
{
int result;
info(DRIVER_DESC " " DRIVER_VERSION " loading");
/* register this driver with the USB subsystem */
result = usb_register(&module_usb);
if (result < 0) {
err("usb_register failed (status %d)", result);
return -1;
}
fw = NULL;
return 0;
}
static void __exit mod_exit(void)
{
info(DRIVER_DESC " " DRIVER_VERSION " unloading");
usb_deregister(&module_usb);
#ifdef CONFIG_AT76C503_FIRMWARE_DOWNLOAD
if (static_fw.size == 0 && fw != NULL)
/* we had loaded and allocated the buffer before */
release_firmware(fw);
#endif
}
module_init (mod_init);
module_exit (mod_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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